an open recess in a wall at the base of a chimney where a fire can be built; "the fireplace was so large you could walk inside it"; "he laid a fire in the hearth and lit it"; "the hearth was black with the charcoal of many fires"
worthy of being recommended or suggested; prudent or wise; "such action is neither necessary nor advisable"; "extreme caution is advisable"; "it is advisable to telephone first"